Acetylene lamp



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1,525,57 G. W. FRO ET AL ACETYLENE LAM Filed March 21, 1924 (57W maPatented Feb. 10, 1925.

UNITED STATES PATENT OFFICE.

GEORGE W. FROST AND ERNEST O. ZACHARIAS, OF SPRINGFIELD, ILLINOIS,ASSIGNORS TO SHANKLIN MANUFACTURING- CO., OF SPRINGFIELD, ILLINOIS.

ACETYLENE LAMP.

Application filed March 21,1924. Serial No. 700,798,

To all whom it may concern:

Be it known that we, GEORGE W. Fnosr and ERNEST O. ZACHARIAS, citizensof the United States, residing at Springfield, in the county of Sangamonand State of Illinois, have invented a new and useful Acetylene Lamp, ofwhich the following is a specification.

The. invention relates to improvements in acetylene lamps of the typecommonly used by miners, said lamps comprising abox containing water,applied on the carbid in due time and quantity to generate acetylene gasregularly as needed; a' burner tube receiving gas from the carbid box, aburner tip at the outer end of the burner tube; a reflector detachablyconnected with the reservoir, an igniter mounted in the reflector inoperativerelation to the burner tip, and a hook fixed on the reserviorand used to connect the lamp with theminers cap.

The objects of the present invention are; to provide improved means fordetachably connecting the reflector with the burner tube and thereservior, to prevent rotation of the reflector on the burner tube andthereby maintain proper position of the igniter relative to the burnertip; to provide a resilient ring detachably connected with the reservoirand carrying arms co-acting with the hook on the reservoir to preventswinging of the lamp on the miners cap; to provide a collar of improvedconstruction between the reflector and the reservoir. contributing tothe general symmetry of the lamp; and toprovide improved meanspreventing leakage of gas around the detachable resilient ring carryingthe braces or arms.

o attain these objects by the mechanism illustrated in the accompanyingdrawing,

a in which-Figure 1 is a side elevation of a miners lamp embodying ourinvention; Fig. 2 is a front view of the reflector, the burner tip andthe igniter' in operative relation to each other. Fig. 3 is a verticalsection through the reflector, the burner tube, and the collar; andthrough a fragment of the upper part of the reservoir, taken on the line3-3 of Fig. 2; Fig. i is a horizontal transverse section through thelamp taken on the line l4. of Fi 1; Fig. 5 is a rear view of thedetached colar; Fig.

6 is a front view of the detached collar; Fig. 7 is a vertical sectionthrough the collar taken on the line 7-7 of Fig. 5; and Fig. 8 is anenlarged vertical section through the lower rim of the housing, theresilient ring in the rim, and the gasket and through a fragment of thecarbid box.

Similar numerals refer to similar parts throughout all the views.

The main structure of the lamp comprises a carbid box 12 having ascrew-threaded neck 17 a water-reservoir 13 having a circular flaredrim-member 14 a circumfential bead 15; and a screw-threaded member 16engaging on the neck 17 to unite the carbid box and the reservoir.

The reservoir has the usual water-tight floor or diaphragm, not shown.The burner tube 18 extends downwardly through the diaphragm, andconducts gas from the carbid box to the burner tip 19,

The igniter comprises a standard 20 firmly attached to the reflector andsupporting the usual rota-tive sparking-wheel 21. In Fig. 2 the igniteris shown in the preferred position relative to the burner; the presentinvention includes means whereby the assembling of the reflector and thecollar on the reservoir will automatically result in proper positioningof the igniter relative to the burner tip, thereby expediting properassembling of the parts and avoiding great annoyance and possible injuryto the user, which might result from misplacement of the igniter.

The collar 24,, shown in detail in Figs. 5, 6, and 7 serves to preventrotation of the reflector on the burner tube and to hold the reflectorplumb, and also serves to determine the position of the igniter relativeto the burner tip. The collar is a circular boxlike structure made froma sheet metal disk pressed to form a circular rim having a radial notch26 to receive the protuberance 23 on the'back of the reflector; acentral member 27, concave 011 itsinner face to conform to'the curvatureof the back of the reflector and convex on its outer face, and having ahole 28 to receive theburner tube, a flat outer face 29 having anintegral protuberance 30, which bears on the member 16 to give rigidityto the structure; andv an integral transverse member 31 convex on, its

the bead will be in the concavity 31;

the reflector 22 will be placed on the tube with the back oftheieflectorincontact with the concave face 27 of the collar andthe'protuberance 30 in contact with the member 16 of the reservoir, andwhen the parts are thus assembled the protuberance 23 on the back of thereflector willbei in the' notclr26 in the collar; the nut 32 willbe'scr'ew'edon the pipe 18 to secure the assembled parts; and the burnertip 19 will be pressed into the end of the tube.

A hook 33 soldered on the reservoir 13' is "used to support the lamp onthe miners' cap.

Braces soldered on the reservoir and extending outwardly therefrom andhaving terminals engaging 'in" holes in a plate on the caphavebeeniu'sed to prevent swing ing of the lamp which is annoying to theuser. The lamps are 'subjectto severe service and the [arms or v bracesare often broken'and detachedfrom the'lamp and in thatcase it isnecessary to take the lamp to a shop for repair. To overcomethisfobjection we provide a resilient wire ring 34 having integraloutwardly extending arms, or braces 35 having terminals 36 adapted toengage the plate commonly used on miners caps to prevent swinging of thelamp.

The metal oftl1e rim-1ne1nber 141: is spun downward and inward to form acircul'ar channel 37 containing the ring 34 which is loose inthechannel. The' arms 35 extend outwardly through notches 38 in the rim14. Upon pressing the arms towards each other the ring will becontracted sufliciently to permit the'ring' to be inserted in, orwithdrawn from, the channel 37. A I a An annul'arlrubb'er gasket 39 'atthe'junctu'reofthe 'carbidbox '12 and the reservoir 13 (Fi 8) is ingas-tightcontact with the outer f'a ce of'the 'carbid box and the innerrace of themember 1450 that gas cannot leak betweenthe'members 12 and lnor throughthe'notches 3 8 'The 'construction described avoids thenecessity'for soldering thebraces' on'the reservoir, thereby reducingthe cost "of m'anufactureyjand furthermore admits I of easy replacementof broken braces without 'the delay and expense of taking them to therepairsliop.

Having fully described our *invention what we claim as new and desire tosecure by Letters Patent is. p a

V 1. "In an acetylene l'amp,'the combination of a reservoir "having acircumferential bead; a burner tube extending outwardly through the wallof the reservoir; a collar having a concavity to receive the bead on thereservoir, also having a radial notch; a concavo-convex reflector havingon its convex face a protuberance engaging in the radial notch of thecollar to prevent rotation of the reflector relative to the collar; and

a sparking wheel supported in the reflector and rotative' in aplaneradial to the reflector and common to the notch in the collar andthe protuberance on the convex face of the reflector; and a nut on theburner tube seeuring the reflector and the collar in fixed relationtoeach other and in 'fixed relation to the reservoir. 2. In an acetylenelamp, the combination of a reservoir; a burner tube extendingoutwardlythrough the wall of the reservoir; a burner tip in the burnertube; a reflector in operative relationto the burner tube; a sparkingwheel rotative on a support in the reflector; a protuberance on theconvex face of the reflector and in the plane of rotation of thesparking wheel; and a collar in fixed relation to the reservoir andhaving a notch to receive the protuberance on the reflector to determinethe position of the igniter relative to the'burner tip.

3. In an acetylene lamp, the combination of a reservoir having arim-member having a circular channel, and radial notches; a hook fixedon the reservoir; a removable resilient ring free in said circularchannel in the rim; and arms integral with said ring and extendingoutwardly through the notches in said rim, in co-operative relation tothe hook on the reservoir.

'4. In an acetylene la-mp'the combination of a reservoir having arim-member having a circular channel and radial notches; and resilientring 'loose in the channel of said rim inember and having integral armsextending outwardly through the notches in the rim member andcompressible to contract said resilient ring to permit insertion of saidring in and its withdrawal from said channel in the rim member.

7 In witness whereof we have hereunto signed our names at Springfield.Illinois,

this 13th 'day of March, 1924.

I GEORGE lV. FROST.

ERNEST O. ZAGHARIAS. xvii-l sse I HAno'Lo'E. 'GILAs, IRV'IN GUE.

